Packing



June 7, 1927.. 1,631,520

J. L. CREEVY n PACKING Filed MarOh' 29, 1923 Jlll..." f

Patented June 7, 1927.

narran, sin-res` PATENT ortica.

- JOHN n; vcminvx. or NEW ORLEANS, Louisiana;

iAcKING.

Appiication filed March 29, 1923-. serial No. 628cm.y

vThe present invention relates to packing for steam, gas,` or air on piston rods, valve stems or revolving shafts, where packing is and claimed.

required and the principal object of the invention is to provide a self-adjusting packing which will be efficient and reliable in use. I y

W'ith the above and numerous other objects in view as will appear as the descrip'- tion progresses, the invention resides in cerv tain novel features of construction, and in the combination'and arrangement of p arts as will be hereinafter more Jfully described be seen that l designates a rod upon whichv the packing is mounted. This packingv includes a plurality of Babbitt metal rings 2 which are dished or so shaped that a cross' section therethrough forms a parallelogram the faces of which extend at an angle of approximately -150 to the outer surface. This is true of all yof the Babbitt metal rings exceptthe end ones which are formed in accordance with the shape of the.v stuifHng box. There is a plurality of pure gum rings 3 or'of some other suitable yieldable material and of suitable thickness vdisposedbetween the Babbitt metal rings to take'eare' of the 40 Vexpansion and contraction of thev entire set of packing and to prevent its' being injured if the gland beset tighter than required. The Babbitt rings are cut in half so as fto vbe formed or' ltwo segments as .1 shown in 45 Figure 4 which are held together by a resilient ringe whicli'is seated ina .groove '5 i provided in the rings 2 on the exterior surface thereof.

As is clearly sli'ownin Figure the pla-lie 50 of compression of each ring 4L passesthrougli t the dished or depressed face 'of the ring 2,'r

which it encircles, 'acting to lcoinpressthis depressedV face against. the adjacent ring. A ,Y j

Having thus described my invention what I'claiin as new -is 'i A packing of the character described, com-l l prising a pair of spaced end rings surrounding a piston rod, aplurality of dished split rings arranged in spaced relation about saidV rod, each of said rings' having a groove formed about the periphery thereof,resilient packing between the separate rings7 and an annular binding element surrounding'keach 65 of the rings and lying inthe grooves thereof, to hold the ringsin position,` the planeof compression of the binding elementv sur-V I rounding each of the dishedrlngs7 passing ythrough the depressed face of the ring at the `inner edge thereof, to Vcause the ring to be compressed againstthe resilient packing f lying against the depressed face thereonV Intestiinony whereof I aiix my signature.

JOHN L. cniiiiv'n'l 

